Article View: comp.lang.postscript
Article #4127Exactly What does a Transformation Matrix Do?
From: Milind Pandit,,,
Date: Mon, 12 Oct 1992 16:20
Date: Mon, 12 Oct 1992 16:20
18 lines
1274 bytes
1274 bytes
Can some one explain exactly what each element of a six-element transformation matrix does? I was under the impression it worked as follows: x y [a b c d e f] transform --> x' y' where x' = ax + b + cy and y' = dy + e + fx. 1 1 [.5 0 0 .5 0 0] transform --> .5 .5 % first and fourth elements scale x and y 1 1 [1 1 0 1 1 0] transform --> 2 2 % second and fifth elements translate x, y -1 1 [1 0 1 1 0 1] transform --> 0 0 However, I seem to be getting different results. --- | Milind S. Pandit | Standard disclaimers apply. | | pandit@iwarp.intel.com |-------------------------------| | Operating Systems Engineer, iWarp Program | Who knows what evil lurks | | Intel Corp., Beaverton, OR | in the hearts of men? |
Technical Details
Message-ID:
<1992Oct12.162054.322@iWarp.intel.com>Path:
arc1-ca.pugleaf.net!sparky!uunet!ukma!cs.widener.edu!eff!iWarp.intel.com|iwarpe30!panditShow Full Headers
Complete Article Headers
Newsgroups: comp.lang.postscript Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!cs.widener.edu!eff!iWarp.intel.com|iwarpe30!pandit From: pandit@ssd.intel.com (Milind Pandit,,,) Subject: Exactly What does a Transformation Matrix Do? Message-ID: <1992Oct12.162054.322@iWarp.intel.com> Sender: news@iWarp.intel.com Nntp-Posting-Host: e30.iwarp.intel.com Reply-To: pandit@ssd.intel.com Organization: SSD Intel Corp. Date: Mon, 12 Oct 1992 16:20:54 GMT Lines: 19